Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 341 · 40 questions

Robot tip (Trade speed for strength): Meshed gears turn opposite ways; in a row, odd-numbered gears turn like gear 1. Small drives big: slower, stronger. Big drives small: faster, weaker. The gear with fewer teeth turns faster. Open belt: same direction. Crossed belt: opposite direction.

1. 1.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
2. 2.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
3. 3.⚙️ A 24-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
4. 4.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
5. 5.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
6. 6.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
7. 7.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
8. 8.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
9. 9.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
10. 10.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
11. 11.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) the same direction (c) in opposite directions (d) they do not turn
12. 12.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
13. 13.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
14. 14.⚙️ Pulley A turns clockwise and drives pulley B with a crossed belt (it makes an X). Which way does pulley B turn? (a) clockwise (b) anticlockwise
15. 15.⚙️ An 8-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
16. 16.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
17. 17.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driver gear (c) driven gear (d) idler gear
18. 18.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
19. 19.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) clockwise (b) anticlockwise
20. 20.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
21. 21.⚙️ A robot fan must spin very fast. The motor’s driver gear meshes with a small gear. What kind of driver gear works best? (a) a small driver gear (b) a big driver gear
22. 22.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
23. 23.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
24. 24.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise
25. 25.⚙️ A robot arm must lift a heavy load slowly. The motor’s driver gear meshes with a big gear. What kind of driver gear works best? (a) a big driver gear (b) a small driver gear
26. 26.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) at the same speed (c) slower but stronger (d) faster but weaker
27. 27.⚙️ A 30-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
28. 28.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
29. 29.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
30. 30.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 7 turn? (a) anticlockwise (b) clockwise
31. 31.⚙️ A 12-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
32. 32.⚙️ A small gear drives a big gear. The big gear turns … (a) faster and weaker (b) at the same speed (c) not at all (d) slower but stronger
33. 33.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
34. 34.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) spokes (c) pins (d) tyres
35. 35.⚙️ A 16-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
36. 36.⚙️ A 12-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
37. 37.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
38. 38.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
39. 39.⚙️ A 20-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
40. 40.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True

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